QwtSimpleCompassRose - Man Page
A simple rose for QwtCompass.
Synopsis
#include <qwt_compass_rose.h>
Inherits QwtCompassRose.
Public Member Functions
QwtSimpleCompassRose (int numThorns=8, int numThornLevels=-1)
virtual ~QwtSimpleCompassRose ()
Destructor.
void setWidth (double)
double width () const
void setNumThorns (int)
int numThorns () const
void setNumThornLevels (int)
int numThornLevels () const
void setShrinkFactor (double factor)
double shrinkFactor () const
virtual void draw (QPainter *, const QPointF ¢er, double radius, double north, QPalette::ColorGroup=QPalette::Active) const
Static Public Member Functions
static void drawRose (QPainter *, const QPalette &, const QPointF ¢er, double radius, double north, double width, int numThorns, int numThornLevels, double shrinkFactor)
Detailed Description
A simple rose for QwtCompass.
Constructor & Destructor Documentation
QwtSimpleCompassRose::QwtSimpleCompassRose (int numThorns = 8, int numThornLevels = -1)
Constructor
- Parameters
numThorns Number of thorns
numThornLevels Number of thorn levels
Member Function Documentation
void QwtSimpleCompassRose::draw (QPainter * painter, const QPointF & center, double radius, double north, QPalette::ColorGroup cg = QPalette::Active) const [virtual]
Draw the rose
- Parameters
painter Painter
center Center point
radius Radius of the rose
north Position
cg Color group
Implements QwtCompassRose.
void QwtSimpleCompassRose::drawRose (QPainter * painter, const QPalette & palette, const QPointF & center, double radius, double north, double width, int numThorns, int numThornLevels, double shrinkFactor) [static]
Draw the rose
- Parameters
painter Painter
palette Palette
center Center of the rose
radius Radius of the rose
north Position pointing to north
width Width of the rose
numThorns Number of thorns
numThornLevels Number of thorn levels
shrinkFactor Factor to shrink the thorns with each level
int QwtSimpleCompassRose::numThornLevels () const
- Returns
Number of thorn levels
- See also
setNumThorns(), setNumThornLevels()
int QwtSimpleCompassRose::numThorns () const
- Returns
Number of thorns
- See also
setNumThorns(), setNumThornLevels()
void QwtSimpleCompassRose::setNumThornLevels (int numThornLevels)
Set the of thorns levels
- Parameters
numThornLevels Number of thorns levels
- See also
setNumThorns(), numThornLevels()
void QwtSimpleCompassRose::setNumThorns (int numThorns)
Set the number of thorns on one level The number is aligned to a multiple of 4, with a minimum of 4
- Parameters
numThorns Number of thorns
- See also
numThorns(), setNumThornLevels()
void QwtSimpleCompassRose::setShrinkFactor (double factor)
Set the Factor how to shrink the thorns with each level The default value is 0.9.
- Parameters
factor Shrink factor
- See also
shrinkFactor()
void QwtSimpleCompassRose::setWidth (double width)
Set the width of the rose heads. Lower value make thinner heads. The range is limited from 0.03 to 0.4.
- Parameters
width Width
double QwtSimpleCompassRose::shrinkFactor () const
- Returns
Factor how to shrink the thorns with each level
- See also
setShrinkFactor()
double QwtSimpleCompassRose::width () const
- Returns
Width of the rose
- See also
setWidth()
Author
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